Ring Sizing Guide

Most Arsaeus rings are available in adjustable sizes and fit into a Small, Medium or Large category.

Size USA & Canada Australia & UK          Length Size (mm)
Small           >  4 A – I   > 48
Medium       5 – 7 I – P 49 – 55
Large       8 – 12 P – Z 56 – 68

Find Your Size Using String or a Strip of Paper

If you are not sure about your ring size there is a simple test you can do yourself.

Supplies Needed

  • Ruler with millimeters
  • Non-stretchy string OR a strip of paper

Instructions

  • Wrap the piece string or strip of paper around the base of your finger
  • Mark the point where it overlaps with a pen
  • Measure the length in millimeters using a ruler
  • Compare the length to the size charts above or below to determine your ring size

International Ring Sizes

Length Size
(mm)
Interior Diameter
(mm)
USA &
Canada
Australia, UK
& Ireland
France Germany
& Belgium
Italy China, India
& Japan
Swiss
48 15.27 4 ½ I ½   15 ¼ 8 8  
49 15.7 5 J ½   15 ¾ 9.5 9  
51 16.1 5 ½ L 51 ¾ 16 10.5 11 11 ¾
52 16.51 6 M 52 ¾ 16 ½ 11.5 12 12 ¾
53 16.92 6 ½ N 54 17 13 13 14
55 17.35 7 O 55 ¼ 17 ¼ 14.5 14 15 ¼
56 17.75 7 ½ P 56 ½ 17 ¾ 16 15 16 ½
57 18.19 8 Q 57 ¾ 18 17 16 17 ¾
58 18.53 8 ½ Q ½ 58 18 ½ 18.5 17  
59 18.89 9 R ½ 59 ¼ 19 19.5 18  
61 19.41 9 ½ S ½ 60 ½ 19 ½ 21 19  
62 19.84 10 T ½ 61 ¾ 20 22 20  
63 20.2 10 ½ U ½ 62 ¾ 20 ¼ 23.5 22  
65 20.68 11 V ½ 64 ¼ 20 ¾ 25 23  
66 21.08 11 ½ W ½ 66 21 26.5 24  
68 21.49 12 Y 67 ½ 21 ¼ 27.5 25 27 ½
69 21.89 12 ½ Z 68 ¾ 21 ¾ 28.5 26 28 ¾
70 22.33 13     22 30 27  

Have Any Questions?

If you have any questions about sizing or inquiries about custom sizing please do not hesitate to reach us through our Help Center – Thank you!